Mmm... Now I were able to force squid to die (with gdb): >From cache.log: --- SNIP --- (squid)(death+0x37)[0x564d37] /lib64/libpthread.so.0(+0xf5d0)[0x7f99ebe705d0] FATAL: Received Segment Violation...dying. 2011/06/10 10:37:28.408| storeDirWriteCleanLogs: Starting... 2011/06/10 10:37:28.409| assertion failed: comm.cc:301: "data == COMMIO_FD_READCB(fd)" --- SNAP --- But there is no mail sent to the mailaddress defined on the "cache_mgr"-directive. I made also a tcpdump on port 25 to check, if there even a mail is sent. But no packets on port 25, no mail. 2011/6/10 Helmut Hullen <Hullen@xxxxxxxxxxx>: > Hallo, Tom, > > Du meintest am 10.06.11: > >> From squid.conf.documented: >> -+- SNIP --- >> # TAG: cache_mgr >> # Email-address of local cache manager who will receive >> # mail if the cache dies. The default is "webmaster." > > "if the cache dies" > > That's another thing than a dying squid. > > Viele Gruesse! > Helmut >